说明
MIC2101/02是具有独特自适应开启时间控制架构的恒定频率同步降压控制器。MIC2101/02在4.5V至38V的输入电源范围内工作,可用于提供高达15A的输出电流。输出电压可调至0.8V,保证精度为±1%。该装置的可编程开关频率为200kHz至600kHz。
Hyper Light Load™架构在中到重负载下提供与Hyper Speed Control架构相同的高效和超快瞬态响应,但在轻负载条件下也通过转换到变频、不连续模式操作来保持高效率。
MIC2101/02提供全套保护功能,确保在故障条件下对IC进行保护。其中包括低电压锁定,以确保在功率暂降条件下正常运行,内部软启动,以减少涌入电流,折返电流限制,“打嗝”模式短路保护和热关机。
特性
- Hyper Speed Control™ architecture enables
- 4.5V to 38V input voltage
- 0.8V Reference Voltage with ±1% accuracy
- 200kHz to 600kHz, programmable switching frequency
- Hyper Light Load Control (MIC2101 only)
- Enable input, Power-Good output
- Built-in 5V regulator for single-supply operation
- Programmable current limit and fold-back "hiccup" mode short-circuit protection
- 5ms internal soft-start, internal compensation, and thermal shutdown
- Supports safe start-up into a pre-biased output
- -40°C to +125°C junction temperature range
参数
类型 | 描述 |
Current Limit / Short Circuit Protection | 1 |
Max Duty Cycle (%) | 0.85 |
Enable Pin | 1 |
Input UVLO Typ (V) | 4.2 |
Internal Compensation | 1 |
Internal Voltage Bias | 1 |
Iq Off (µA) | 0.1 |
MaximumInputVoltage | 38 |
MaximumOutputVoltage | 24 |
MinimumInputVoltage | 4.5 |
MinimumOutputVoltage | 0.8 |
Operating Supply Current (mA) | 0.4 |
PFM, Discontinuous, Hyperlight load, or Skip Mode | 1 |
Package | 3x3 QFN |
Power Good Signal | 1 |
Soft Start | 1 |
Supported Outputs | 1 |
Supported Topologies | Sync. Buck |
Typical Tolerance (%) | ±1 |



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